// ========== sidebar ========== //
.sidebar {
    position: fixed;
    display: flex;
    flex-direction: column;
    left: 0;
    top: 0;
    z-index: 0;
    height: 100%;
    width: 400px;
    transition: all 0.2s ease-out .0s;
    overflow-x: hidden;
    background-color: #222;
}

.sidebar-hide {
    display: none;
}

// ========== sidebar header ========== //
.sidebar-tabs {
    display: flex;
    position: relative;
    padding: 0;
    margin: 0;
    height: 4rem;
    width: 100%;
    z-index: 1001;
    justify-content: space-around;
    align-items: flex-start;
    font-family: $feature-font-family;
    flex-grow: 0;
    color: #eee;
    border-bottom: 2px solid #666;
    &::after {
        content: '';
        position: absolute;
        width: 33.33%;
        height: 2px;
        left: 0;
        top: 100%;
        background-color: $feature-color;
        transform: translate3d(0, 0, 0);
        transition: transform 0.2s ease-out .0s;
    }
}

.sidebar-tab-archives,
.sidebar-tab-tags,
.sidebar-tab-categories {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    width: 33.333%;
    height: 100%;
    cursor: pointer;
    .iconfont-archer {
        pointer-events: none;
        margin: 0 0.5rem 0 0rem;
        font-size: 1.5rem;
    }
}

.tab-name {
    pointer-events: none;
    font-size: 1.5rem;
    margin-left: 0.2rem;
}

.sidebar-tabs-active-0 {
    &::after {
        transform: translate3d(0, 0, 0);
    }
}

.sidebar-tabs-active-1 {
    &::after {
        transform: translate3d(100%, 0, 0);
    }
}

.sidebar-tabs-active-2 {
    &::after {
        transform: translate3d(200%, 0, 0);
    }
}

// ========== sidebar content ========== //
.sidebar-content {
    position: relative;
    display: flex;
    width: 300%;
    height: calc(100% - 4rem);
    top: 0;
    left: 0;
    transition: transform 0.3s ease-out .0s;
    overflow-x: hidden;
    transform: translate3d(0, 0, 0);
}

.sidebar-panel-archives,
.sidebar-panel-tags,
.sidebar-panel-categories {
    overflow-x: hidden;
    overflow-y: auto;
    flex-shrink: 0;
    width: calc(33.33% - 2rem);
    -webkit-overflow-scrolling: touch;
    overflow-scrolling: touch;
}

.sidebar-content-active-0 {
    transform: translate3d(0, 0, 0);
}

.sidebar-content-active-1 {
    transform: translate3d(-33.33%, 0, 0);
}

.sidebar-content-active-2 {
    transform: translate3d(-66.67%, 0, 0);
}
